There are 3 general parts of a tummy tuck (abdominoplasty): removal of extra, stretchy skin, removal of extra fat to trim the belly wall, and tightening of abdominal muscles (usually the rectus muscles). Whether all 3 of these maneuvers needs to be done in order to give the patient the smoothest, trimmest, and firmest belly wall, will depend on just what anatomic problems exist prior to surgery. This will be determined by a careful examination by an experienced plastic surgeon. Many patients do not have any muscle stretching or looseness, and so muscle tightening does not have to be done. On the other hand, if muscle looseness or separation has contributed to your shape deformity, then you would need muscle tightening to give you the best result. Be sure to discuss with your surgeon what he/she plans to include and why.